Pontoon: Update Romansh Vallader (rm-vallader) localization of Common Voice
Pontoon: Update Romansh Vallader (rm-vallader) localization of Common Voice

Localization authors:
- Daniela Albertini <d.albertini@bluewin.ch>

common-voice/common-voice,gozer/voice-web,gozer/voice-web,common-voice/common-voice,gozer/voice-web,gozer/voice-web,common-voice/common-voice,gozer/voice-web,common-voice/common-voice,gozer/voice-web,gozer/voice-web